JP2018172174A - Cap-equipped container - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cap-equipped container which suppresses a sink mark on the inner surface side of a neck part even when a thick stopper part is provided on the base end side part of the neck part, and prevents occurrence of fluff during finish processing of a mouth cylindrical part or the like.SOLUTION: A container body 1 having a bottomed body part 10 and a neck part 12 erected on a shoulder part 11 connected to an upper end of the body part 10 and provided with a mouth cylindrical portion 13 erected having a threaded portion on the outer circumferential surface via the neck part 12, and a cap 2 screwed into the mouth cylindrical portion 13, are provided in a cap-equipped container. A stopper part 14 is provided at a position separated away from the outer circumferential surface of the neck part 12 in the radial direction, and the cap 2 is provided with an engaging part 24 which abuts against the stopper part 14 from the circumferential direction and is engaged with the lower end part of an inner cylindrical part 22 screwed into the mouth cylindrical part 13.SELECTED DRAWING: Figure 8

Description

  The present invention provides a container with a cap provided with an alignment function part on the container body and the cap body so that the screwing posture of the cap body with respect to the container body is always accurately aligned along the circumferential direction. It is about.

  As a container for storing various products such as shampoo, rinse, cosmetics, etc., the container body and the cap body that is screwed to the container body have a non-circular shape such as an ellipse or a rectangle, and the appearance of the container is designed. There is known a container that is interesting and that can easily and accurately achieve direction in use.

  In this container, the cap body is screwed to the container body and the container body and the cap body have the same non-circular planar shape. Limit), the cap body needs to be aligned with respect to the container body with respect to the circumferential direction. For this reason, both the container body and the cap body are provided with an alignment function portion.

  As a prior art of a container with a cap having this alignment function, for example, in Patent Document 1, an engagement projection is projected from the base end of the neck of the container body, and a boss-like stopper is projected downward from the lid. By securing the boss-like engagement piece of the lid to the engagement protrusion of the container main body, it is possible to secure the assembly of the lid to the container main body at the screwing limit position and to the engagement protrusion of the container main body. By abutting the boss-shaped stopper of the lid, an accurate and safe screwing operation to the screwing limit position of the lid with respect to the container body is obtained.

  In general, the container body is often made by blow molding or the like, and the wall thickness of the pair of engaging projections (stopper portions) provided on the base end portion of the neck portion standing on the shoulder portion with its axis interposed therebetween is relatively large. It is formed. For this reason, as shown in FIG. 10, in the container body having an elliptical cross section, a pair of stopper portions are provided at opposed positions along the major axis of the container body on the outer peripheral surface side of the neck 112 following the shoulder 111. In this case, due to the molding shrinkage of the molten resin, there is a sink 130 in which the shrinkage amount such as a dent and a depression increases on the inner surface of the neck 112 corresponding to the position of the pair of stopper portions on the front side toward the opening 118. And a portion from which the meat (resin) is removed is formed on the inner surface of the container wall. And by removing the burrs, etc. generated in the mouthpiece part during blow molding, the surface near the mouthpiece part is beautiful, the touch is improved, and the drill cutting finish as post-processing to keep the sealing property well. When finishing the sink part where the meat (resin) has been removed, chipping may occur on the cut end surface (neck inner surface) of the sink part, and if the chip falls into the container, foreign matter is mixed. End up.

JP 2002-145290 A

  The object of the present invention is to suppress the occurrence of sink marks near the inner surface of the neck portion even when a thick stopper portion is provided at the base end portion of the cylindrical neck portion, and to prevent the occurrence of fluff during finishing processing. It is to provide an attached container.

In order to solve the above problems, the main configuration of the container with a cap of the present invention is:
A container having a bottomed body portion, a neck portion standing on a shoulder portion connected to the upper end of the body portion, and a mouth tube portion having a screw portion on an outer peripheral surface standing upright through the neck portion The lower end portion of the main body and the inner tube portion that is screwed into the mouth tube portion of the container body has a locking portion that abuts and stops from the circumferential direction against the stopper portion provided on the container main body side. A container with a cap having a cap screwed onto
The stopper portion is a container with a cap, characterized in that the stopper portion is provided at a position separated radially outward from the outer peripheral surface of the neck portion.

  In the above main configuration, since the sink near the inner surface of the neck portion can be reduced by moving the position of the thick stopper portion away from the outer peripheral surface of the neck portion, it is possible to suppress the occurrence of chipping during the finishing process, It is possible to prevent foreign matter from being mixed due to dropping off the edges.

  Another configuration of the present invention is that, in the main configuration described above, the stopper portion is connected to the neck portion via a connecting piece having a thickness smaller than the thickness thereof. According to this configuration, since the thin connecting piece is interposed between the outer peripheral surface of the neck and the stopper portion, the influence from the stopper portion having a large thickness is reduced in the process of cooling and solidification, and the occurrence of sink marks. Can be small.

  Another configuration of the present invention is the above main configuration, wherein the stopper portion is erected in a protruding shape on the upper surface of the shoulder portion. According to this configuration, a space with low heat conduction is formed between the protruding stopper portion and the outer peripheral surface of the neck portion, so that the influence from the stopper portion is further reduced in the process of cooling and solidification. Generation can be made smaller.

  Another configuration of the present invention is such that, in the main configuration described above, a part of the flange portion in which the stopper portion is formed on the outer peripheral surface of the neck portion protrudes radially outward. According to this configuration, the flange portion having substantially the same thickness and width is interposed between the stopper portion and the outer peripheral surface of the neck portion, thereby reducing the influence of the stopper portion in the cooling and solidifying process. The occurrence of sink marks can be reduced.

  In another configuration of the present invention, a pair of stopper portions are provided at opposing positions sandwiching the central axis of the container body, and a pair of locking portions are provided at opposing positions sandwiching the central axis of the cap.

  Since the abutting portion between the stopper portion and the locking portion is in an axially symmetric position with respect to the central axis of the container body and the central axis of the cap, the central axis is eccentric when the cap is positioned at the screwing limit. Without being fixed, and the screwing assembly posture is appropriate and stable, so that a reliable and stable sealing operation can be exhibited.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the main configuration of the present invention, by reducing the position of the stopper portion radially outward from the outer peripheral surface of the neck portion, sink marks in the vicinity of the inner surface of the neck portion are reduced, and when the finish processing of the mouth tube portion is performed, Generation | occurrence | production can be suppressed and the foreign material mixing by the fall of a crack can be prevented inside a container.

It is a front view of the container with a cap concerning a 1st embodiment of the present invention. It is a top view of a container main body. It is a side view of a container main body. It is the elements on larger scale near the stopper part of a container main part. It is a partial longitudinal cross-sectional view of a cap side surface. It is a partial longitudinal cross-sectional view of the cap front. It is a bottom view of a cap. It is a BB cross-sectional view in FIG. It is a schematic explanatory part which shows the generation | occurrence | production state of the sink on the neck inner surface seen from the container main body inside. It is a schematic explanatory part which shows the generation | occurrence | production state of sink on the neck inner surface in a prior art. (A) And (b) is the front view and side view of a container with a cap which concern on 2nd Embodiment of this invention, respectively. (A) is the elements on larger scale near the stopper part of the container main body which concerns on 2nd Embodiment of this invention, (b) is CC cross-sectional view in (a). (A) And (b) is the front view and side view of a container with a cap which concern on 3rd Embodiment of this invention, respectively. (A) is the elements on larger scale near the stopper part of the container main body which concerns on 3rd Embodiment of this invention, (b) is DD cross-sectional view in (a). (A) And (b) is the front view and side view of a container with a cap which concern on 4th Embodiment of this invention, respectively. (A) is the elements on larger scale near the stopper part of the container main body which concerns on 4th Embodiment of this invention, (b) is the EE transverse cross section in (a). (A) And (b) is the front view and side view of a container with a cap which concern on 5th Embodiment of this invention, respectively. FIG. 18 is a cross-sectional view taken along line FF in FIG. (A) And (b) is the front view and side view of a container with a cap which concern on 6th Embodiment of this invention, respectively. (A) is the elements on larger scale near the stopper part of the container main body which concerns on 6th Embodiment of this invention, (b) is a GG cross-sectional view in (a).

Embodiments of the present invention will be described below with reference to the drawings.
As shown in FIG. 1, the container with a cap according to the first embodiment of the present invention has a configuration including a container main body 1 and a cap 2 screwed into the container main body 1.

  As shown in FIGS. 1 to 3, the container body 1 includes an extrusion blow molding (direct blow, extrusion) in which one end of a parison obtained by extruding a molten resin into a tube shape is sandwiched between a pair of molds, and compressed air is blown. (Also referred to as blow molding (EBM)) has a body portion 10 that has a flat, substantially elliptical and bottomed cylindrical shape. A shoulder portion 11 bulging toward the central axis O is connected to the upper end of the body portion 10, and a cylindrical lower neck portion 12 a is erected from the shoulder portion 11. On the top wall 12b of the lower neck portion 12a, an upper neck portion 12c having a diameter smaller than that of the lower neck portion 12a is provided upright, and the lower neck portion 12a and the upper neck portion 12c form a stepped neck portion 12. Above the neck portion 12, a mouth tube portion 13 is provided via a flange-like support piece 16. A male screw portion 17 is engraved on the outer peripheral surface of the mouth tube portion 13, and an opening 18 is formed on the upper end side. Further, on the upper surface of the top wall 12b of the lower neck portion 12a, a pair of opposed portions sandwiching the central axis O is disposed along the major axis of the trunk portion 10 and the shoulder portion 11 having a substantially elliptical shape for the purpose of positioning the cap 2. The stopper portion 14 protrudes (FIG. 2). In particular, as is apparent from the description of FIG. 4, the stopper portion 14 and the upper neck portion 12 c are integrally connected via a connecting piece 15 that is thinner than the stopper portion 14. Further, the connecting piece 15 is integrated with the support piece 16 and the top wall 12b of the lower neck portion 12a at the upper and lower sides thereof. As for these positional relationships, the connecting piece 15 is positioned closer to the upper neck portion 12 c, and the stopper portion 14 is positioned at the outer end portion of the connecting piece 15. In other words, the stopper portion 14 is provided at a position away from the upper neck portion 12c, which is the upper portion of the neck portion 12, radially outward. The stopper portion 14 and the connecting piece 15 are provided in two locations in the circumferential direction of the upper neck portion 12 c so as to be paired at positions that are axially symmetric with respect to the central axis O of the container body 1. The thickness relationship between the stopper portion 14 and the connecting piece 15 will be described in detail in a later paragraph.

  As shown in FIGS. 5 to 7, the cap 2 has a flat cap top wall 20, the outer cylinder portion 21 from the lower surface of the peripheral edge of the cap top wall 20, and the container body from the lower surface near the center. The inner cylinder part 22 which has the internal thread part 22a screwed together with the external thread part 17 of the outer peripheral surface of 1 mouth cylinder part 13 is connected in a hanging shape, respectively. A substantially cylindrical bottom surface of the cap top wall 20 is provided with a short cylindrical seal tube piece 23 that is in close contact with the inner peripheral surface of the opening 18 of the container body 1 to improve airtightness. At the lower end portion of the inner cylindrical portion 22, a locking portion 24 that locks with the stopper portion 14 of the container body 1 is positioned symmetrically with respect to the central axis O along the major axis of the cap 2, that is, the center A pair is provided at opposing positions across the axis O. The locking portion 24 has a cantilever shape in which one end side is integrally connected to the inner cylinder portion 22 and the other end side is a free end, and a locking projection 24a projects from the inner end of the cantilever piece. Yes. Reinforcing ribs 25 are provided on the lower surface of the cap top wall 20 at positions that are axially symmetric with respect to the central axis O (see FIG. 7).

  When the cap 2 is attached to the container body 1 and rotated and assembled to the screwing limit position, the locking projection 24a of the locking part 24 of the cap 2 that abuts against the stopper portion 14 of the container body 1 from the circumferential direction, Get over the stopper 14. As a result, a click feeling is imparted, and the stopper portion 14 abuts and engages with the engaging portion 24 to stop the screwing of the cap 2 and to align the cap 2.

  In the first embodiment of the present invention, as shown in an enlarged view in FIG. 8, it is an essential requirement that the thickness t2 of the connecting piece 15 is thinner than the thickness t1 of the stopper portion 14. This is the same in the second to fourth embodiments described later. The thicker the connecting piece 15 connected to the neck 12 (in this embodiment, the upper neck 12c), the greater the thickness of the inner surface of the neck 12 due to molding shrinkage during the cooling process of the molten resin. Since the amount of contraction increases, sink marks near the inner surface of the neck portion 12 can be reduced by reducing the thickness t2 of the connecting piece 15.

  FIG. 9 is a schematic explanatory view showing the occurrence of sink marks in the vicinity of the neck portion 12 as viewed from the inside of the container body 1 according to the first embodiment of the present invention. That is, on the inner surface side of the top wall 12b interposed between the lower neck portion 12a and the upper neck portion 12c, the surface is separated from the outer peripheral surface of the upper neck portion 12c by a place away from the opening 18, that is, by the connecting piece 15. Although sink marks 30 are slightly generated on the inner surface of the top wall 12b corresponding to the position of the stopper portion 14 provided, the vicinity of the inner surface of the upper neck portion 12c on the opposite side of the connecting piece 15 having a small thickness, that is, the opening portion Almost no sink marks occurred in places close to 18. As a result, even if the inner surface of the neck portion 12 is cut and finished with a drill or the like, the occurrence of chipping can be suppressed, and foreign matter can be prevented from being mixed into the container body 1 due to dropping of the chip.

  FIGS. 11-20 shows the container main body 1 and its main part of 2nd Embodiment thru | or 6th Embodiment of the container with a cap which concerns on this invention. In addition, about the part which is the same as that of the said 1st Embodiment, or similar, it shows with the same code | symbol and abbreviate | omits the description which overlaps.

  11 and 12 show a second embodiment of a container with a cap according to the present invention. In the illustrated container body 1, the neck portion 12 is common to the first embodiment in that the neck portion 12 includes a lower neck portion 12 a and an upper neck portion 12 c, but the stopper portion 14 is not radially outward of the upper neck portion 12 c, but the lower neck portion 12 a. The point which is provided in the position away with respect to the outer peripheral surface of is different. In this case, the connecting piece 15 that connects the lower neck portion 12a and the stopper portion 14 reaches the flange-like support piece 16 positioned above along the upper neck portion 12c and is integrated therewith. The thickness of the connecting piece 15 is formed to be thinner than the thickness of the stopper portion 14 as is apparent from FIG.

  13 and 14 show a third embodiment of a container with a cap according to the present invention. In the illustrated container body 1, a neck portion 12 is composed of a lower neck portion 12 a and an upper neck portion 12 c, and a stopper portion 14 is connected to the neck portion 12 (lower neck portion 12 a) via a connecting piece 15 having a smaller thickness. This is common to the first embodiment and the second embodiment. The feature of this embodiment is that, as is clear from FIG. 14 (b) in particular, the lower neck portion 12a is formed with a missing circular portion 12d having a predetermined length centered on the base end of the connecting piece 15. . In this way, by providing the missing circle part 12d along the base end of the connecting piece 15, it becomes easy to further widen the distance between the stopper part 14 and the neck part 12 (lower neck part 12a). Therefore, the influence of the stopper portion is reduced by that amount, and the occurrence of sink marks can be reduced. In this embodiment, the connecting piece 15 is the same as the height of the lower neck portion 12a, but reaches the flange-like support piece 16 positioned upward along the upper neck portion 12c as in the second embodiment, These may be integrated.

  15 and 16 show a fourth embodiment of a container with a cap according to the present invention. In the illustrated container main body 1, the stopper portion 14 is cylindrical with a thin connecting piece 15 instead of the two-stage structure in which the neck portion 12 is composed of the lower neck portion 12 a and the upper neck portion 12 c as in the first to third embodiments. It is provided in the lower end part of the neck part 12 which consists of. In this case, on the outer peripheral surface of the neck portion 12 located on the base end side of the connecting piece 15, a thin strip-shaped protrusion 12e is formed along the axial direction over the entire length, and with respect to the strip-shaped protrusion 12e. The connecting piece 15 is connected (in particular, refer to FIG. 16).

  17 and 18 show a fifth embodiment of a container with a cap according to the present invention. In the illustrated container body 1, the neck 12 has a one-stage structure similar to that of the fourth embodiment. In this case, the stopper portion 14 is erected in a protruding shape on the upper surface of the shoulder portion 11 formed in a step shape. That is, in this embodiment, without using the thin connection piece 15 as in the first to fourth embodiments, the stopper portion 14 is cooled and solidified by leaving a space with respect to the outer peripheral surface of the neck portion 12. The influence on the inner surface side of the neck portion 12 is reduced, and the occurrence of sink marks is suppressed.

  19 and 20 show a sixth embodiment of a container with a cap according to the present invention. In the illustrated container body 1, a flange portion 12 f is formed on the neck portion 12, and a part thereof functions as the stopper portion 14. That is, as is clear from the cross-sectional view of FIG. 20B in particular, a portion where a part of the flange portion 12f protrudes radially outward is the stopper portion 14. In addition, the belt-like protrusion part 12e similar to the said 4th Embodiment is provided in the outer peripheral surface of the neck part 12 facing the position of the stopper part 14. FIG. In this embodiment, the position of the flange portion 12f is located above the lower end portion of the neck portion 12, and the stopper portion 14 is separated from the outer peripheral surface of the neck portion 12, thereby affecting the neck portion 12 when the stopper portion 14 is cooled and solidified. The effect is reduced and the occurrence of sink marks is suppressed.

As described above, the configuration and the operation effect of the present invention have been described along the examples. However, the embodiment of the present invention is not limited to the above embodiment.
For example, in each of the above-described embodiments, a bottomed cylindrical bottle container having a bottom portion below the trunk portion 10 is shown, but a bottomed bag-like tube container that gradually decreases in diameter toward the bottom may be used. Although the stopper part 14, the connecting piece 15, and the locking part 24 are provided in the major axis direction of the shape, these may be provided in the minor axis direction.

  As described above, according to the present invention, it is possible to reduce the sink near the inner surface of the neck, thereby suppressing the generation of a chipping when performing a finishing process, and preventing foreign matter from being mixed into the container due to the dropping of the chipping. Applications in the container field can be expanded in a wider area.

DESCRIPTION OF SYMBOLS 1; Container body 2; Cap 10; Body part 11; Shoulder part 12; Neck part 12a: Lower neck part 12b: Top wall 12c: Upper neck part 12d: Missing circle part 12e: Strip | belt-shaped protrusion part 12f: Flange part 13; Stopper portion 15; connecting piece 16; support piece 17; male screw portion 18; opening 20; cap top wall 21; outer cylinder wall 22; inner cylinder wall 22a; female screw part 23; 24a; locking projection 25; reinforcing rib 30; sink O; central axis t1; wall thickness t2 of the stopper portion; wall thickness of the connecting piece

Claims (5)

It has a bottomed body part (10), and has a neck part (12) standing on a shoulder part (11) connected to the upper end of the body part (10), and through the neck part (12) A container body (1) erected with a mouth tube portion (13) having a screw portion on the outer peripheral surface, and a lower end portion of an inner tube portion (22) screwed into the mouth tube portion (13) of the container body (1) And a cap (24) having a locking portion (24) that abuts and locks against a stopper portion (14) provided on the container body (1) side from the circumferential direction, and screwed into the mouth tube portion (13). 2) a capped container having
The said stopper part (14) is provided in the position away from radial direction outward with respect to the outer peripheral surface of the said neck part (12), The container with a cap characterized by the above-mentioned. The stopper (14) is connected to the neck (12) via a connecting piece (15) having a thickness (t2) that is thinner than the thickness (t1) of the stopper (14). The container with a cap according to claim 1. The container with a cap according to claim 1, wherein the stopper portion (14) is provided in a protruding manner on the upper surface of the shoulder portion (11). The said stopper part (14) is a container with a cap according to claim 1, wherein a part of a flange part formed on an outer peripheral surface of the neck part (12) protrudes radially outward. .   A pair of the stopper portions (14) are provided at opposed positions sandwiching the central axis (O) of the container body (1), and the engaging portions (24) are opposed positions sandwiching the central axis (O) of the cap (2). The container with a cap as described in any one of Claim 1 thru | or 4 characterized by the above-mentioned.

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